How to validate digital signature in a document in Linux

In Linux, libreoffice-draw has the ability to open and validate digital signatures. Unfortunately, this functionality is broken as of today in the seahorse or gnome-keyring on LinuxMint 19.2 Tessa. This is due to the Ubuntu repository not having an updated package or a bug in seahorse. Without digging into above, a different program named PDFStudioViewer … Continue reading How to validate digital signature in a document in Linux

Hash Story – What are hashes and how they are used

Many ordinary users would really not care about message digests or hash functions. To shed light on this, here is an introduction with the following basic facts: Data transmitted over the Internet heavily relies on checksums.The TCP protocol used to transmit data over the Internet relies on verification of these checksums to make sure that … Continue reading Hash Story – What are hashes and how they are used